During Taiwan's hot, humid summers, mosquitoes are ideal for breeding

During Taiwan's hot, humid summers, mosquitoes are ideal for breeding. fly killer Aedes aegypti, the Asian tiger mosquito, and the Asian tiger mosquito can transmit diseases like Japanese encephalitis. The city office sprays insecticides along the street drainage holes in order to prevent mosquitoes and cockroach infestation. Ordinary people often use electric mosquito repellent, mosquito repellent and other readily available products to avoid infestations of mosquitoes and cockroaches.

So-called "environmental drugs" include mosquito repellent incense and insecticides, which are indispensable chemical weapons for the development of daily life and learning. cockroach insecticide spray But how much do you know about these ubiquitous chemicals? How do they affect human health? What changes will they cause to the environment?

Pesticides are nerve gas for insects

Insecticides can be divided into three categories based on their stunning ability: strong acting, medium acting, and slow acting.

The structure of this compound is very similar to that of pyrethrin, which is extracted from specific chrysanthemums and used in powerful, fast-acting, environmentally friendly medications. Common pyrethroids include cyfluthrin, proparthrin, cypermethrin, etc. mosquito killer Pyrethroids contain "-thrin" at the end, which means "Ooning" in Chinese.

Meterenin, Puyalenin, and serfenin were the three compounds from top to bottom

There is a similar middle structure between the three compounds, but the two sides are different; in fact, it is the difference between these two "substituents" that makes the drug act differently.

Although camphor, peppermint, and other drugs have only "insect repellent" effects, pyrethrin is effective at "destroying" mosquitoes, due to its nerve axonal excitatory toxin. This toxin enters the insect body and opens the sodium ion channel membrane, increasing the conduction function of the nervous system, resulting in paralysis and death.

What are the dangers of pesticides?

At this point, surely some people are concerned that something that kills mosquitoes should also cause harm to humans? It was of course taken into consideration by the producers as well. The goal of environmental drug development is to target only the target organism. The pesticide pyrethrin is highly toxic to arthropods, but less toxic to vertebrates.

However, even if we do, we may feel itchy, burning, or tingling if our skin is exposed to pyrethroids for a short period of time. Symptoms such as dizziness, headache, and even loss of consciousness may occur if we inhale or ingest high concentrations of pyrethroids or pyrethroids for a short period of time. In order to use environmental drugs effectively, we must pay attention to the dosage and maintain ventilation.

humid summers Asian tiger mosquito

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